Bed spring-frame



Oct. 5, 1965 R. STAUBLE; 3,209,379

f BED SPRING-FRAME Filed Deo. 12, 1965 \7 i, A 4 :Y

ab i 2b II l l t 3 5 L 3b 3 3a 3b 10 3c 3c 3 /NVE'NTOI fein/M 6:01a, B7/M United States Patent O 3,209,379 BED SPRING-FRAME Reinhold Stauble, Ringstrasse, Dagmersellen, Switzerland Filed Dec. 12, 1963, Ser. No. 330,021 Claims priority, application Switzerland, Dec. 16, 1962, 14,837/ 62 Claims. (Cl. 5247) The present invention relates to a bed spring frame that may be used as bottom mattress.

Known spring frames comprise tension or compression spr-ings -which on being loaded `or unloaded, give rise to clipping, binding or jamming actions which render necessary the mounting of protector means. A further dis- -advantage `of such Iknown spring frames is the fact that in use mostly the same springs are loaded which thus prematurely lose their resilience.

The spring frame disclosed herein comprises two lateral longerons or stringers which at uniform distances are interconnected by metal bars that lare lsecured thereto in a non-twistable or non-torsionable relation, the bentoi end portions of said bars, which are bent substantially -in the plane of the longerons, bei-ng detachably inserted in longeron bores extending substantially at right angles to the planes of the longerons.

Each single bar preferably comprises a circularly bent middle portion lying in -a plane and laterally merging :into extensions that are substantially parallel to each other, and the end portions being bent-ofIr substantially at right angles to said extensions and said plane.

One form of my present invention is shown by way of example in the drawing, lin which:

FIG. 1 is atop plan view and FIG. 2 a side View of the spring frame,

FIG. 3 shows a vertical section through one Iof the two longerons,

FIG. 4 is a perspective view of one of the spring bars in larger scale, and- FIG. 5 shows a prop in elevation.

The bed spring-frame shown compri-ses two parallel longerons 1 a-nd 2 which are interconnected through bars 3. Each of the bars 3 comprises -a circularly bent middle portion 3a which `on both sides merges into a straight portion 3b, and the end portions 3c are bent oif. Middle portion 3a and the portions V3b are situated in one and the same plane, while the end portions 3c extend substantially at right angles thereto and are destined to be introduced into bores 14 provided in shoulderlike steps 4 ofthe longerons.

The equidista-ntly inserted bars 13 form the springbed proper, the bars being subjected to a resilient torsional stress through the eccentric bearing thereof when the bar middle portions 3a are being loaded. Such torsional res-ilience is still further enhanced in that the bar portions 3b butt against the outside surfaces of the steps 4 and cannot turn aside when the bars are loaded.

In place of the steps 4, rabbets may be provided in the longerons for receiving the portions 3b, which rabbets ferge into bores for accommodating the end portions 3c.

The terminal bar \5 preferably does not comprise any straight port-ions so as to afford a support for the mattress to be laid on, up to the e-nd of the longerons 1.

Two struts 7 are pivoted on pins 6 to the longerons 1 and are interconnected by circularly bent bars 6', as already described above. Since the straight portions of the 'bars -3 are positioned in rabbets, no substantially parallel bends thereof are required.

To make the struts 7 inclinable, which through the bars 3 are interconnected and which Itogether form the so-called wedge, a bar coniiguration l8 (IFIIG. 5) .is pivoted to that strut portion which is remote from the pins 6,

3,209,379 Patented Oct. 5, 1965 i.e. retained in eyes 11. When the struts 7 are inclined or raised, said configuration 8 Ais engaged in notches 9 of the longerons 1, 2. A handle por-tion 10 serves for lowering the conguration y8 and thereby the struts 7. A sling 12 limits the travel or dislocation of member 8.

If it is desired to lift individual -bars from the longerons, the straight portions 3b of the bars have to be seized. To such end, the bars, as shown in IFIGS. 3 `and 4, in their straight portions 3b comprise a slight upward bulge immediately before the bend of the portions 3c, which allow to seize the portions 3b.

In place of the end langles 13 shown in the head part may be disposed-as shown in dash lines-a straight bar 13 of which the angularly bent bearing portion 1f3b may be somewhat longer for stiiening purposes.

The spring frame described and shown is of simple manufacture and may be taken apart for transport and ystorage with va view of saving space. Nevertheless it represents a comfortable bottom mattress of which the middle porti-on in particular aiords a good springiness and which is very sturdy. Broken springs which may be caused by faults in the material, may be readily repaired. The frame m-ay be raised `after assembly by lifting the bars, for the bar end por-tion |3c thereby are tilted in their bores and thus prevent the bars from being disengaged from the longerons.

The head part normally is made integral yand undividable in that -the bars 3 are fastly inserted in the struts 7. The 4head part, however, may be disengaged from the pins 6 to reduce the weight of the entire fra-me. This is particularly desirable for lifting the frame from the bedsteads.

The two longerons 1, 2 do not comprise any special cross-members for completing the conventional lframe, but the vbars 3 assume such function. The entire frame is built up withou-t helical springs nor screws so that the mattress accommodated thereon cannot be damaged by clamping, binding or jamming. Top or lupper mattresses may be put down directly on the spring frame, without need for an intermediate protector means.

I claim:

1. A spring-frame f-or 4a bed, comprising in combination, two elongated substantially parallel frame members spaced apart from each other for a distance, and a series of metal bars removably connected to, `and thereby interconnecting, said frame members, each frame member having a series of bores in the longitudinal direction of said frame members, each bar comprising a middle portion and Itw-o parallel straight end portions extending in one direc-tion from said middle portion, rand each end portion removably -tting into and engaging a bore, said middle portion being arcuate and in unloaded condition disposed substantially in a horizontal plane and said end portions disposed in a plane at light angle thereto, whereby when a load is applied to the bed said bars will be stressed torsi-onally.

2. In `a spring-frame, as claimed in claim A1, each bar comprising an extension between said middle portion and each end portion, said two extensions being substantially parallel to each other.

3. In a spring-frame, as claimed in claim 2, each frame member having a vertically recessed sec-tion facing in the direction towards the other frame member, said bores being disposed in said sections, said straight extensions bearing on said recessed sections.

4. In a spring-frame, as claimed in claim 2, each frame member including rabbets leading to said bores, said straight extensions being received in said rabbets.

5. In a spring-frame, Ias claimed in claim 1, together with struts pivoted at one end to said frame members, and a rectangular member having a recessed handle portion and being operablesto brace said struts in selec- 3,025,048 3/6`2 Stubni-t ively variable raised positions. FOREIGN PATENTS References Cited by the Examiner 433,634 8/ 35 Great Britain.

UNITED STATES PATENTS 5 986,535 3/51 France 3,013,795 y12/ 61 Eisen 267-110 ARTHUR L. LA POINT, Primary Examiner. 

1. A SPRING-FRAME FOR A BED, COMPRISING IN COMBINATION, TWO ELONGATED SUBSTANTIALLY PARALLEL FRAME MEMBERS SPACED APART FROM EACH OTHER FOR A DISTANCE, AND A SERIES 